针对人工分类的不足，研究了动态聚类法在车辆实际行驶工况开发中的应用。
Taking into account the deficiency of artificial classification, the purpose of this paper was to report the application of dynamic cluster to the development of vehicle real world driving cycle.
本文以科技部863课题“典型城市车辆实际行驶工况的研究”为依托，阐述城市车辆行驶工况的开发方法及相关研究。
The paper describes development method and relative research of vehicle driving cycle, according to 863 project-study of vehicle real driving cycles of typical city.
该方法采用动力学模型对车辆运动进行描述，考虑了车体运动与车轮速率、转向角之间的关系，比用线性模型更符合车辆实际行驶时的复杂运动状况。
For the mobile case, a dynamic model of the vehicle motion, which takes account of the relationship between the rigid body motion of vehicle and the steering and drive rates of wheels, is adopted.
自行车车道离机动车道仅有几英尺，机动车规定速度必须保持在每小时30英里，这是在西雅图干道上的速度限制，但实际上许多车辆都是以每小时40英里的速度行驶的。
A few feet from the cycling lane traffic moves at speeds of between 30 miles per hour, the speed limit for arterials in Seattle, and 40 miles per hour, the speed at which many cars actually travel.
试验表明这些加载方式可以较准确地模拟车辆在实际道路上行驶时所承受的载荷，从而评价驱动桥的综合性能。
Tests show that the loading scheme can rather accurately simulate the actual loads exerting on a vehicle and hence can relatively exactly evaluate the comprehensive performance of drive axle.
经实验验证，该方案基本可以复现出车辆的实际行驶路线，达到了预期的设计目标。
Experimental results show that the system can reconstruct the trajectory of the vehicle in the accident and achieve the expected goal.
采用一套车载尾气测试系统，对选取的6辆代表性车辆在宁波市实际道路行驶中的瞬时排放进行测试。
Using a set of on-board vehicle emissions test system, 6 selected typical vehicles were tested on urban roads in Ningbo.
采用一套车载尾气测试系统，对选取的6辆代表性车辆在宁波市实际道路行驶中的瞬时排放进行测试。
Using a set of on-board vehicle emissions test system, 6 selected typical vehicles were tested on urban roads in Ningbo.
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